hard20 pts · first answer countsmicrocontrollersspidma

SPI chip select released too early

An SPI DMA transfer-complete interrupt raises chip select. The slave sometimes misses the last byte. Why?

A.The DMA transfer-complete interrupt fires before the first byte is sentB.Chip select must stay low forever once a DMA transfer has been startedC.SPI DMA always reverses the bit order of the final byte in the bufferD.TX DMA finishes when the last byte is in the data register, not shifted out

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SPI chip select released too early

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